Are there any values of x and y for which x + y is equal to x - y

You can choose any value for , while you must choose .

Intuitively, this makes sense since means that you want to start from number , and you want to obtain the same result by moving left or right by units. This can't happen, unless you don't move at all, i.e. .

If you want to be more formal, you have

while was canceled, so it can assume any value.

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1